科學(xué)家誘導(dǎo)出人類全能干細(xì)胞

A team of researchers from China, Britain and Bangladesh converted pluripotent stem cells, or an "adult" version of early embryonic cells, back to a more "juvenile" version of cells with developmental potential, tantamount to fertilized eggs in their day 3 developmental stage.
由中國(guó)、英國(guó)和孟加拉國(guó)的科學(xué)家組成的研究團(tuán)隊(duì)將人類多能干細(xì)胞，即“成年”版本的早期胚胎細(xì)胞，轉(zhuǎn)化成具有發(fā)育潛力的、更“年輕”的干細(xì)胞，即相當(dāng)于受精卵發(fā)育3天狀態(tài)的全能干細(xì)胞。
Totipotent 8-cell stage embryo-like cells recreate the embryonic state of a fertilized egg after only three divisions, making them the youngest human cells acquired in vitro ever known, Li Wenjuan from the Chinese Academy of Sciences said.
中國(guó)科學(xué)院的李文娟博士表示，這些全能性的8細(xì)胞期胚胎樣細(xì)胞重建了受精卵僅分裂3次后的胚胎狀態(tài)，這是迄今為止在體外誘導(dǎo)獲得的“最年輕”的人類細(xì)胞。


Cells described as "totipotent" mean that they have the potential to create all types of cells within embryonic and extra-embryonic tissues, according to researchers.
據(jù)介紹，全能性細(xì)胞意味著它們有潛力分化出胚胎和胚胎外組織中所有類型的細(xì)胞。


"These cells can not only differentiate into placental tissue but also potentially develop into more mature organs," Li said.
李文娟博士說(shuō)，這種細(xì)胞可以分化為胎盤組織，并可能發(fā)育為更成熟的各類身體組織。


Ethical review had given clearance to the relevant study.
該研究已通過(guò)倫理審查。